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UNITED STATES PATENT OFFICE.

JOHN MCL. THOMPSON AND JAMES C. BALL, OF ROCHESTER, NEW YORK.

BUILDING.

SPECIFICATION forming part of Letters Patent No. 498,891, dated .Tune 6,1893.4

Application filed January 22, 1891. Serial No. 378,722. (No model.)

To @ZZ whom t may concern: l

Be it known that we, JOHN MCL. THOMP- soN and J AMES C. BALL, ofRochester, in the county of Monroe and State of New York, have inventeda certain new and useful Improvement in Buildings; and we do herebydeclare that the following is a specification of the same, referring tothe drawings accompanying the application.

Our improvement relates to buildings composed of a frame work of iron,and in which T-shaped studding is used; and it also relates to thatclass in which composite blocks compose the outer covering,being laid upin sections and bolted to the T bars. The invention consists in theconstruction and arrangement of parts hereinafter described and claimed.

In the drawings-Figure l is an elevation of a portion of one side of thebuilding showing someof the blocks in place. Fig. 2 is a horizontal,cross section in line o: of Fig. 1. Fig. 3 is a perspective view of oneof the blocks. Fig. 4. is a perspective view of a portion of one of thestuds and the bracing strip that is notched therein, looking on the backside.

The studs D D are composed of bars of T iron set up endwise, the fiatside being placed outward to receive the composite blocks GG. Theseblocks are made of cement or any other suitable material, and ofrectangular or square form, as shown. When Iitted to place on the studstheir abutting ends lap half way on the studs and meet in the center.

In the act of molding the blocks, bolts d d, with outer screw ends, arefitted in the mold and cast therein, said bolts serving as the means toattach the blocks to the studs. To accomplish this the flat faces of theT studs are provided with holes n n., through which the bolts pass, andnuts are screwed on thef ends of the bolts on the inside. The blocks arealso cast with loop-shaped handles h h projecting on the back side, bywhich means the blocks are readily handled.

E E are braces, consisting of flat bars notched into the flanges at rtheback of the studs, as shownin Fig. 4. These braces serve to hold thestuds in lirm position, so that they will not warp or twist, and alsoserve as the door supports. It is essential to hold the studs perfectlysquare, otherwise the building blocks will not it accurately or makegood joints, and the face of the building will present an irregularappearance. The braces hold them perfectly firm and prevent any suchaction. Furthermore the braces are essential to prevent spreading of thestuds, which would disarrange the blocks, open the joints, and break thebolts from their holdin the blocks.

We are aware that the use of composite blocks is common; but, so far aswe are aware, they have been attached to the liat sides of wooden orbrick walls, or to wooden studs, or to simple iron bars. The design ofthis invention is to use T iron, which gives greater strength andstability, and to this end the What we claim as new, and desire tosecure by Letters Patent, is-

l." The combination, with the T- shaped studs placed with their flatfaces outward, and with the braces connecting the backs of said studs,of the composite blocks provided with projecting screw bolts enteringholes in the iat faces of the studs and secured by nuts, as c hereinshown and described.

2. The composite block provided on its back side with screw bolts and aloop-shaped handle molded in the block, as herein shown and described. c

c In witness whereof we have hereunto signed our names in the presenceof two subscribing witnesses.

JOHN MCL. THOMPSON. J. C.. BALL.

Witnesses:

R. F. OsGooD, CHAs. A. WIDENER.

